/*
 * Copyright 2021 4Paradigm
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com._4paradigm.openmldb.batch.utils;

import java.io.*;


public class ConfigReader {
    public static String readConf(String path) throws Exception{
        BufferedReader reader = null;
        if (path.startsWith("classpath:")) {
            String parsedPath = path.replace("classpath:", "");
            InputStream is = ConfigReader.class.getResourceAsStream(parsedPath);
            InputStreamReader isr = new InputStreamReader(is, "utf-8");
            reader = new BufferedReader(isr);
        }else {
            InputStream inputStream = new FileInputStream(path);
            reader = new BufferedReader(new InputStreamReader(inputStream, "UTF-8"));
        }
        StringBuilder builder = new StringBuilder();
        String line = reader.readLine();
        while (line != null) {
            builder.append(line + System.lineSeparator());
            line = reader.readLine();
        }
        return builder.toString();
    }
}
